12 



AUSTRALIANS LAND SHELLS. 



27. Helix SUbangulata. Pfr. Plate IX. Fig. 6, copied from 



Pfr., Pro. Zool. Soc, 1854, p. 53. 

 Peeve, Cone. Icon. sp. 1301. 



Shell umbilicated, convexly-depressed, rather solid, finely striated, 

 scarcely shining, waxy, ornamented with a narrow chestnut band 

 near the suture, and 2 broader ones (3 in Pceve's Fig.) beneath 

 the periphery ; spire short, convex, obtuse ; whorls 4^, slightly con- 

 vex, gradually increasing, last not descending, periphery slightly 

 angled, base rather flat, aperture oblique, of a rounded squarish 

 form ; peristome simple, straight, with margins nearly parallel, the 

 columellar being expanded near the umbilicus, which is of a moderate 

 size and open. 



Diameter, greatest - 64 ; least - 50 ; height 0*45 of an inch. 



Habitat. Van Diemen's Land. Pfeijfer. 



As I have never seen this species, I have taken the above description 

 from Pfeiffer, Hon. Hel. Viv., Vol. PV., and the figure from Peeve, 

 Gone. Icon. 



VIII. SECTION DISCUS. Pfr. Vers. p. 125. 



28. Helix sericatula. Pfr. Plate XII. Pig. 6 natural size, and 

 6 a. magnified. M.C. 



Pfr., Pro. Zool. Soc., 1849, p. 127. 

 Peeve, Cone. Icon. sp. 812. 



Shell perforated, depressed, discoid, thin, closely and rather finely 

 striately ribbed, greyish-horny, rayed with dark brown, the streaks 

 generally in clusters, not shining, but sometimes with a silky lustre ; 

 spire flat ; whorls \\, slightly convex, last not descending in front, 

 rounded, somewhat impressed near the umbilicus ; aperture slightly 

 oblique, lunate, sometimes pearly within ; peristome simple, rather 

 obtuse, straight, the columellar margin sloping, slightly reflected 

 above, and partially concealing the small umbilicus. 



Diameter, greatest 0-20; least 01 7 ; height 0*10 of an inch. 



Habitat, Garden, Clark, and Shark Islands, in Port Jackson ; also 

 abundant in the neighbourhood of Sydney, and in other parts of the 

 colony. Cox. 



